单选题When you exchange e-mail with someone, the messages sent between you and that person pass through several computers before they reach their destinations.

单选题But several schools do welcome U. S. medical students — if they can master the local language. A. 但如果美国医学生能掌握当地语言，有几所英国学校会欣然接受他们的。 B. 但如果美国医学生能讲当地语言，有几所英国学校会欢迎他们的。 C. 但几所学校真欢迎美国学生——如果他们能读懂当地语言。 D. 如果他们能说当地方言，几所英国学校欢迎美国学化学的同学的。 E. 但美国医学学生会欢迎的，如果他们能讲方言。

单选题As requested, we enclose for your attention our price list and catalogue. I would like to take this opportunity of drawing your attention to the fact that all our products are made from completely natural ingredients. There are 200 different items in the catalogue and our prices are reasonable and our quality is good. We look forward to receiving your order soon.

单选题The medicine has many functions, ______ are unknown to us. A. some of which C. that some of them B. of which some of them D. which of them

单选题The new house is ______ the old one.

单选题The City of London, ______ repeatedly in 1940 and 1941, lost many of its famous churches. A. bombed B. to bomb C. bombing D. having bombed

单选题We cannot help asking if sandstorm is a pure natural phenomenon over which we have no control．A) 我们禁不住要问沙尘暴是否是一种纯自然现象，而我们对它无法控制。B) 如果沙尘暴是一种纯自然现象，我们不禁要问这个问题是否不能解决。C) 我们不禁要问沙尘暴是否是一种人类无法控制的纯粹的自然现象。D) 如果沙尘暴是一种纯自然现象，对于我们能否控制它我们也不知道。

单选题Conversation 1

单选题If you go to the U. S. A, you'll be able to make friends with those______.

单选题Our program is aimed to train the right candidates in all aspects of business and marketing as well as in communication and team leadership.

单选题Most of the retired people are happy ______ their quiet life in the countryside. A. to B. of C. with D. on

单选题Time is limited and I can ______ finish my work in time.

单选题{{B}}Task 2{{/B}}{{B}}Directions:{{/B}} This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 to 45. Some people argue that self-plagiarism(自我剽窃) is impossible by definition because plagiarism is theft and people cannot steal from their own work. But, this is not correct in law. And there are circumstances, such as insurance fraud(保险欺诈), etc, when it is possible to steal from oneself. Self-plagiarism, however, must be carefully distinguished from the recycling of one's work that to a greater or lesser extent everyone legally does. Self-plagiarism in academic (学术的) publications is a gray area. However, many universities indirectly recognize the practice as deceptive. They publish rules preventing students from handing in basically the same essay for credit in different courses. There are also rules against someone handing in the same graduate thesis to different universities. Among established academics, self-plagiarism is a problem. It means basically the same article or book is handed in on more than one occasion for salary raising or promotion. Like all plagiarism the essence of self-plagiarism is the author attempts to cheat the reader. This happens when no indication is given that the work is being recycled or when an effort is made to disguise the original text. For example, an author just makes cosmetic changes to make the same article, chapter, or book look different. But actually it remains unchanged in its central argument. In this case, disguising a text occurs. Authors change such things as paragraph breaks, capitalization, or the substitution of technical terms in different languages. What he has done is to make readers believe they are reading something completely new. This practice is self-plagiarism.

单选题They insist that a computer ______ only what our thinking humans have planned. A) have done C) do B) be doing D) does

单选题This is a story about how someone in a very difficult situation keeps her positive attitude. An award should go to the United Airlines gate agent in Denver for Being smart. She made her point when confronted with passenger who probably deserved to fly as cargo. A crowded United flight was canceled. A single agent was rebooking a long line of inconvenienced travelers. Suddenly an angry passenger pushed his way to the desk. He slapped his ticket down on the counter and said, "I HAVE to be on this flight and it has to be FIRST CLASS." The agent replied, "I'm sorry sir. I'll be happy to try to help you, but I've got to help these folks first. And I'm sure we'll be able to work something out. The passenger was unimpressed. He asked loudly, so that the passengers behind him could hear, "Do you have any idea who I am?" Without hesitating, the gate agent smiled and grabbed her public address microphone." May I have your attention, please?" she began, her voice bellowing throughout the terminal, "We have passenger here at the gate WHO DOES NOT KNOW WHO HE IS. If anyone can help him find his identity, please come to the gate. " With the folks behind him in line laughing uncontrollably, the man glared at the United agent, gritted his teeth and swore, "Damn it all!" She grinned and said, "I'm sorry, sir, but you'll have to stand in line for that, too./

单选题People feel that the independence of nations, SO long talked about by statesmen，is today more than ever a reality.

单选题The energy which the sun radiates goes in every direction, and only a minute part of it falls on the earth. It is reported that some scientists believe less than 1% of the solar energy fallen on the earth has been used so far. Even so, it represents power of approximately 5, 000,000 horsepower per square mile per day; the sun gives us as much energy every minute as mankind utilizes in a year. At present, because of the lack of scientific knowledge, we use this energy indirectly, and it is our only final source of power. Coal represents the chemical action of the sun on green plants thousands of years ago. Waterpower results from the sun's creating vapor and subsequent rain. Even windmills operate because of air currents set in motion by the different heating effects of the use this immense source of energy more directly. Already, scientists have worked out a new type of energy, surprisingly efficient, in which the sun's rays are concentrated through mirrors on a tube of water to create steam.

单选题I have worked for computer companies large and small, and now I realize that programming is actually only half the story.

单选题It was reported that only one tourist was fortunate to escape ______ in the attack. A．to be killed B．having killed C．killing D．being killed

单选题I wonder if I can ask him ______ time.